2010 Camaro SS cold start- Texas Speed 1 7/8" cat-less headers

This is the cold start on my Camaro. I recently installed Texas Speeds 1 7/8" cat-less long tube headers along with the supporting exhaust they sent. This setup works great for being loud, but tolerable. There is some droning if you're giving the car throttle and at 1800-2000 rpm. With the cat-less style, it pops and bangs when the engine is high in rpm and you're off the throttle. It popped and banged before and after a tune.
Part number TSP-G5304HXOR-178